Developer Tools
Unix Timestamp Converter
Convert Unix timestamps to readable dates and convert dates back to Unix time.
Unix timestamp converter
10-digit values are treated as seconds. 13-digit values are milliseconds.
UTC
2026-09-08T18:24:08.000Z
- Seconds
- 1788891848
- Milliseconds
- 1788891848000
- Local
- Tue Sep 08 2026 18:24:08 GMT+0000 (Coordinated Universal Time)
How it works
Enter a timestamp in seconds or milliseconds, or pick a date and time. The converter shows Unix seconds, milliseconds, UTC, and local time.
Formula
Unix time is the number of seconds since 1 January 1970 00:00:00 UTC. Milliseconds = seconds × 1000.
Example
1735689600 is 2025-01-01 00:00:00 UTC. The matching millisecond value is 1735689600000.
Frequently asked questions
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